A new report from the UN has found that Syrian President Bashar al-Assad’s forces are to blame for a deadly chemical attack that killed more than 90 people in a rebel village earlier this year.

The investigation from the UN and the Organisation for the Prohibition of Chemical Weapons (OPCW), released on Thursday, said that experts are “confident that the Syrian Arab Republic is responsible for the release of sarin at Khan Sheikhoun on 4 April 2017”.

Dozens of people were rushed to hospital in the rebel-held town in Idlib province after the incident with symptoms such as convulsions, suffocation, coughing blood and foaming at the mouth, consistent with either sarin gas – a nerve agent – or chlorine exposure, Medecins Sans Frontiéres said their staff found.

Images and video from the incident, including dying children, caused outrage around the world, and eventually led to US President Donald Trump’s “warning shot” barrage of 59 Tomahawk missiles on a nearby Syrian airbase – the only direct US intervention in Syria’s civil war to date.

Mr Assad has repeatedly denied his government has any chemical weapons stocks after agreeing to give them up to international monitors in 2013. Damascus, along with its Russian and Iranian allies, have said that the casualties were caused when a conventional air strike on an al-Qaeda weapons depot nearby caused an explosion, releasing the deadly gases.

Russia has used its position as a permanent member of the UN Security Council to repeatedly shield the Syrian government from international action. Earlier this week, Moscow vetoed a resolution extending the mandate of the UN and OPCW’s Joint Investigative Mechanism (JIM) into the use of chemical weapon’s in Syria’s war.

The new JIM report, however, backs up preliminary findings by UK, US, French and Israeli intelligence that it was a Syrian warplane that dropped sarin on the town.

“Britain condemns this appalling breach of the rules of war and calls on the international community to unite to hold Assad’s regime accountable,” Foreign Secretary Boris Johnson said in response to the report. Continue reading.